テスト環境のみ表示のエラー詳細：SQLエラー
SELECT * FROM rsssitecontents WHERE del_flg='0' and disp_flg='0' and category_news='1' and posttime<='2017/09/27 06:46:31' and FIND_IN_SET(,category_tags) ORDER BY pickup_flg desc,posttime desc LIMIT 1000 OFFSET 0